*,
*:before,
*:after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    -webkit-box-align: center;
    -ms-flex-align: center;
    align-items: center;
    background: -webkit-linear-gradient(315deg, #404040, #333);
    background: linear-gradient(135deg, #404040, #333);
    background-color: #333;
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-pack: center;
    -ms-flex-pack: center;
    justify-content: center;
    min-height: 100vh;
    padding: 24px;
}
body::-webkit-scrollbar {
    display: none;
}

a {
    color: inherit;
    text-decoration: none;
}
a:hover {
    text-decoration: underline;
}

.card {
    color: #d4cd96;
    font-family: 'Microsoft YaHei','Lantinghei SC','Open Sans',Arial,'Hiragino Sans GB','STHeiti','WenQuanYi Micro Hei','SimSun',sans-serif;
    height: 100%;
    left: 0;
    position: absolute;
    top: 0;
    -webkit-transform-origin: 100% 50%;
    transform-origin: 100% 50%;
    -webkit-transform-style: preserve-3d;
    transform-style: preserve-3d;
    width: 100%;
    -webkit-tap-highlight-color: transparent;
    -webkit-transition: -webkit-transform 0.6s cubic-bezier(0.49, 0.23, 0.58, 0.49);
    transition: -webkit-transform 0.6s cubic-bezier(0.49, 0.23, 0.58, 0.49);
    transition: transform 0.6s cubic-bezier(0.49, 0.23, 0.58, 0.49);
    transition: transform 0.6s cubic-bezier(0.49, 0.23, 0.58, 0.49), -webkit-transform 0.6s cubic-bezier(0.49, 0.23, 0.58, 0.49);
}
.card.flipped {
    -webkit-transform: translateX(-100%) rotateY(-180deg);
    transform: translateX(-100%) rotateY(-180deg);
}

.card-front,
.card-back {
    -webkit-backface-visibility: hidden;
    backface-visibility: hidden;
    background: -webkit-repeating-linear-gradient(315deg, rgba(0, 0, 0, 0.3), transparent 1px, rgba(0, 0, 0, 0.3) 2px);
    background: repeating-linear-gradient(135deg, rgba(0, 0, 0, 0.3), transparent 1px, rgba(0, 0, 0, 0.3) 2px);
    background-size: 3px 3px;
    background-color: #302f34;
    border-radius: 1px;
    box-shadow: 0px -6px 8px 0px rgba(0, 0, 0, 0.1), 0px 6px 8px 0px rgba(0, 0, 0, 0.1), 6px 0px 8px 0px rgba(0, 0, 0, 0.1), -6px 0px 8px 0px rgba(0, 0, 0, 0.1);
    cursor: pointer;
    height: 100%;
    left: 0;
    padding: 5%;
    position: absolute;
    top: 0;
    width: 100%;
}

.card-back {
    -webkit-transform: rotateY(180deg);
    transform: rotateY(180deg);
}
.card-back .layer {
    background: -webkit-repeating-linear-gradient(315deg, rgba(76, 71, 31, 0.3), transparent 1px, rgba(76, 71, 31, 0.3) 2px);
    background: repeating-linear-gradient(135deg, rgba(76, 71, 31, 0.3), transparent 1px, rgba(76, 71, 31, 0.3) 2px);
    background-size: 3px 3px;
    background-color: #d4cd96;
    color: #302f34;
    height: 100%;
    position: relative;
    width: 100%;
}
.card-back .layer:after {
    background: -webkit-linear-gradient(315deg, rgba(0, 0, 0, 0.2), transparent);
    background: linear-gradient(135deg, rgba(0, 0, 0, 0.2), transparent);
    content: '';
    display: block;
    height: 100%;
    left: 0;
    position: absolute;
    top: 0;
    width: 100%;
}
.card-back .layer .top,
.card-back .layer .bottom {
    left: 8%;
    position: absolute;
    z-index: 1;
}
.card-back .layer .top {
    top: 12%;
}
.card-back .layer .bottom {
    bottom: 12%;
}
.card-back .layer h2, .card-back .layer h3, .card-back .layer h4 {
    font-weight: 400;
    margin: 2px 0;
}
.card-back .layer h2 {
    font-size: 16px;
    font-weight: 500;
    text-transform: uppercase;
}
.card-back .layer h3 {
    font-size: 16px;
}
.card-back .layer h4 {
    font-size: 16px;
    font-style: italic;
}

.card-front .layer {
    -webkit-backface-visibility: hidden;
    backface-visibility: hidden;
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-orient: vertical;
    -webkit-box-direction: normal;
    -ms-flex-direction: column;
    flex-direction: column;
    height: 100%;
    -webkit-box-pack: center;
    -ms-flex-pack: center;
    justify-content: center;
    position: relative;
    width: 100%;
}
.card-front .layer h1 {
    font-size: 32px;
    font-weight: 400;
    letter-spacing: -2px;
    margin: 0 auto;
    padding: 6px 18px 4px;
    text-align: center;
}
.card-front .layer .corner {
    -webkit-backface-visibility: hidden;
    backface-visibility: hidden;
    border-right: 2px solid #d4cd96;
    border-top: 2px solid #d4cd96;
    height: 12px;
    position: absolute;
    width: 12px;
}
.card-front .layer .corner:nth-of-type(1) {
    right: 0;
    top: 0;
}
.card-front .layer .corner:nth-of-type(2) {
    left: 0;
    top: 0;
    -webkit-transform: rotateZ(-90deg);
    transform: rotateZ(-90deg);
}
.card-front .layer .corner:nth-of-type(3) {
    bottom: 0;
    left: 0;
    -webkit-transform: rotateZ(180deg);
    transform: rotateZ(180deg);
}
.card-front .layer .corner:nth-of-type(4) {
    bottom: 0;
    right: 0;
    -webkit-transform: rotateZ(90deg);
    transform: rotateZ(90deg);
}

.card-wrapper {
    height: 271.76471px;
    max-width: 420px;
    -webkit-perspective: 600px;
    perspective: 600px;
    position: relative;
    width: 100%;
    -webkit-transition: -webkit-transform 1s;
    transition: -webkit-transform 1s;
    transition: transform 1s;
    transition: transform 1s, -webkit-transform 1s;
}
